路基土壤固有频率与密实度关系的测试分析

李 军; 周志立; 李 言

路基土壤固有频率与密实度关系的测试分析

李军^1,2,
周志立³,
李言¹

1.
西安理工大学机械与精密仪器工程学院，西安 710003
2.
洛阳理工学院机械工程系，洛阳 471003
3.
河南科技大学车辆工程学院，洛阳 471003

基金项目: 国家自然科学基金资助项目（51075124）

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出版历程
- 收稿日期: 2011-10-14
- 发布日期: 2012-07-14

Test analysis of relationship between natural frequency and compaction degree for roadbed soil

摘要

摘要: 明确路基土壤固有频率与土壤密实度的关系是准确建立振动压路机振动轮振动信号与被压实材料压实度关系的基础，也是通过在线检测振动轮加速度、实时了解路面的压实状况、进一步有效调整振动压路机振动参数的必要条件。该文针对特定路基土壤，自制螺旋压实机构压制路基土壤圆柱试样，依照模态分析法，采用INV306DF便携式智能信号采集处理分析系统进行了不同压实度圆柱试样的固有频率测试，获得了路基土壤固有频率与土壤密实度的函数关系表达式，研究结果可为完善振动压路机智能化控制系统设计提供依据。
- 土壤 /
- 密实度 /
- 振动 /
- 固有频率 /
- 模态分析
Abstract: The relationship between the natural frequency of roadbed soil and the soil compaction degree is the foundation for accurately establishing the relationship between the vibration signal of vibration roller and the compaction degree of soil and is the basis for effectively adjusting work parameters of vibratory roller to improve the compaction efficiency based on the real-time compaction condition of roadbed by online detecting vibration signal. Taken specific roadbed soil as study subjects, cylinder soil samples were made by homemade spiral compacting mechanism in this paper. Based on the modal analysis method and using INV306DF portable intelligent signal acquisition and processing analysis system, the natural frequency tests were done for different cylinder soil samples with different compaction degree. The function relation expression was obtained between natural frequency and compaction degree of roadbed soil. This study provides a reference for improving the intellectualized control system of vibratory roller.
- soils /
- compaction degree /
- vibrations /
- natural frequency /
- modal analysis

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参考文献(22)

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路基土壤固有频率与密实度关系的测试分析

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出版历程

Test analysis of relationship between natural frequency and compaction degree for roadbed soil

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出版历程

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